A series of system errors on online transaction platforms run by local brokerages and an internet bank were reported this week, disrupting services. SK Securities suffered a technical glitch at its home trading system and mobile trading system for nearly three hours from about 10 a.m. to 1 p.m., a source told The Korea Herald, saying it caused investment losses. “I wasn’t able to connect to the MTS, so I tried trading through the HTS. I was able to trade my securities in real time,